Ovulation is the time when an egg is released from the dominant follicle (winner of the race) within an ovary, into the fallopian tube where it can become fertilized by sperm.

Where does follicle release egg?

Right before ovulation, the egg inside the follicle detaches itself. The follicle starts to release chemicals that encourage the nearby fallopian tube to move closer and surround the follicle. The follicle swells until it bursts open, ejecting the egg and fluid into the abdominal cavity.

Which of the ovarian follicles can ovulate?

Tertiary follicles, also known as antral follicles: Follicles that contain a fluid-filled cavity called the antrum; follicles at this stage are visible via transvaginal ultrasound. Graafian follicle: A follicle large enough to ovulate; only one or two of the tertiary follicles in each cycle will mature to ovulation.